Results 21 to 30 of about 44,073 (258)

Síntese, por reação de combustão em forno de microondas, de nanoferritas de níquel dopadas com cromo Synthesis of nickel nanoferrites doped with chromium by microwave assisted combustion reaction

Cerâmica, 2009
Pós nanométricos de ferritas de níquel dopadas com cromo foram sintetizados por reação de combustão em forno de microondas. A influência da concentração de Cr3+ nas proporções de x = 0; 0,5 e 1 no sistema NiCr xFe2-xO4 foi investigada.
A. C. F. M. Costa, P. Sarubo-Junior, D. A. Vieira, V. J. Silva, T. S. Barros, D. R. Cornejo, R. H. G. A. Kiminami   +6 more
doaj   +1 more source

Preparação e caracterização de catalisadores ácidos de zircônia sulfatada para aplicação na esterificação do óleo de algodão

Cerâmica
Resumo Esse trabalho objetivou produzir zircônia por síntese de combustão, analisar a estrutura e morfologia comparativamente com um ZrO2 monoclínico comercial e investigar a sulfatação, visando obter catalisadores ácidos para uso na esterificação do ...
F. N. Silva, T. F. B. Moura, A. S. Silva, E. M. J. A. Pallone, A. C. F. M. Costa   +4 more
doaj   +1 more source

Conceptual Limitations of the Probability Density Function Method for Modeling Turbulent Premixed Combustion and Closed-Form Description of Chemical Reactions’ Effects

Fluids, 2021
In this paper, we critically analyzed possibilities of probability density function (PDF) methods for the closed-form description of combustion chemical effects in turbulent premixed flames.
Vladimir L. Zimont
doaj   +1 more source

Time-resolved multispectral imaging of combustion reaction

SPIE Proceedings, 2015
Thermal infrared imaging is a field of science that evolves rapidly. Scientists have used for years the simplest tool: thermal broadband cameras. These allow to perform target characterization in both the longwave (LWIR) and midwave (MWIR) infrared spectral range.
Alexandrine Huot, Marc-André Gagnon, Karl-Alexandre Jahjah, Pierre Tremblay, Simon Savary, Vincent Farley, Philippe Lagueux, Éric Guyot, Martin Chamberland, Frédérick Marcotte   +9 more
openaire   +1 more source

Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys

Advanced Engineering Materials, EarlyView.
An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi, Mathias Galetz, Georg Hasemann, Fabian Lanoy, Emma White, Manja Krüger   +5 more
wiley   +1 more source

Síntese e caracterização do ferroespinélio Ni0,7Zn0,3Fe2O4: avaliação de desempenho na esterificação metílica e etílica

Cerâmica
Resumo O ferroespinélio Ni0,7Zn0,3Fe2O4 foi sintetizado por reação de combustão e seu desempenho catalítico na reação de esterificação metílica e etílica do óleo de soja foi investigado.
A. B. Mapossa, J. Dantas, V. C. S. Diniz, M. R. Silva, R. H. G. A. Kiminami, A. C. F. M. Costa   +5 more
doaj   +1 more source

Effects of Pyrrhotite on the Combustion Behavior and the Kinetic Mechanism of Pyrite-Pyrrhotite Mixture Powders in the Air

International Journal of Chemical Engineering, 2023
In this study, we performed a comparative analysis of the combustion behavior of pyrite, pyrrhotite, and pyrite-pyrrhotite mixture (mixed mineral) powders in an air atmosphere.
Changshun Tian, Yunzhang Rao, Gang Su, Tao Huang   +3 more
doaj   +1 more source

The Influence of Field‐Assisted Sintering Technology (FAST) Temperature and Cooling Rate on the Microstructural Evolution in Gamma‐Titanium Aluminide Alloy GE4822

Advanced Engineering Materials, EarlyView.
Controlling the Field Assisted Sintering Technology (FAST) parameters, dwell temperature and cooling rate, significantly influences the microstructural evolution in titanium aluminide GE4822. Significant γ‐lamellar colonies develop only upon cooling through the α‐transus.
Jack Krohn, James Pepper, Martin Jackson
wiley   +1 more source

Artificial intelligence in combustion reaction kinetics: Methods and applications

Applications in Energy and Combustion Science
Combustion is a complex process involving fluid dynamics, heat transfer and chemical kinetics, with significant environmental impacts due to greenhouse gas and pollutant emissions.
Chenyue Tao, Chengcheng Liu, Bin Yang
doaj   +1 more source

Characteristics of Pyrolysis and Low Oxygen Combustion of Long Flame Coal and Reburning of Residues

Energies, 2021
To further understand the problems of coal combustion and coalfield fire reignition, this paper researched the reaction characteristics of coal pyrolysis and low oxygen combustion and the reburning oxidation characteristics of residual structure by ...
Hua Wang, Wei Zhang, Haihui Xin, Deming Wang, Cuicui Di, Lu Liu   +5 more
doaj   +1 more source